US5466068A - Articulated bearing for heavy loads - Google Patents

Articulated bearing for heavy loads Download PDF

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Publication number
US5466068A
US5466068A US08/162,082 US16208294A US5466068A US 5466068 A US5466068 A US 5466068A US 16208294 A US16208294 A US 16208294A US 5466068 A US5466068 A US 5466068A
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United States
Prior art keywords
bearing
pot
articulated
bearing according
space
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Expired - Fee Related
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US08/162,082
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English (en)
Inventor
Hans P. Andra
Wolfhart Andra
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Individual
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Individual
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/04—Bearings; Hinges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/04—Bearings; Hinges
    • E01D19/048—Bearings being adjustable once installed; Bearings used in incremental launching
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/04—Bearings; Hinges
    • E01D19/042—Mechanical bearings
    • E01D19/047—Pot bearings

Definitions

  • the invention relates to an articulated bearing for the articulated transfer of heavy loads to a support, in particular to brace a bridge superstructure on a bearing pad, with a bearing pot, which contains an incompressible, deformable pressurized material and rests on the support, said bearing pot comprising a pot bottom and a pot wall, and with a cover, which receives the load to be braced, rests on the pressurized material and is sealed with respect to the pot wall.
  • Such articulated bearings serve to transfer freely and easily large loads to a support.
  • the bearings have to transfer both vertical and horizontal loads, yet allow tilting movements around arbitrary horizontal axes during most applications.
  • These tilting joints are employed especially during bridge construction in order to support the superstructure on a bearing pad.
  • the deformable pressurized material is a plastic material, which is enveloped on all sides by the bearing pot and the cover.
  • the cover is braced in the vertical direction against the deformable pressurized material and in the horizontal direction against the pot wall.
  • the pot wall is stressed by both the lateral pressure of the pressurized material and the external horizontal forces exerted through the cover. This horizontal stress necessitates that the pot wall and the connecting region at the pot bottom be quite thick.
  • the object of the invention is to design an articulated bearing of the aforementioned class in such a manner that the wall of the bearing pot can be designed as small as possible.
  • This problem is solved according to the invention by further connecting the pot to the cover with a journal-and-recess connection and positioning the journal within only a portion of the height of the recess to form therein a vertical gap.
  • the gap is also filled with the pressurized medium that occupies the main space formed between the cover and pot for maximizing the supporting area of the pressurized medium. Communication is provided between the gap and the main space for equalizing pressure therebetween.
  • the pot wall Since the horizontal forces are transferred by means of the central bearing, the pot wall is relieved of these possibly very high horizontal forces and has only to absorb the side pressure of the deformable pressurized material. Apart from the relatively low sealing forces, no horizontal forces are transferred from the cover to the pot wall.
  • the entire bearing pot can be designed with relatively small outer dimensions and--at least in the pot wall and the outer region of the pot bottom--with relatively low wall thickness, since even the flexural stresses in the region where the pot wall is connected to the pot bottom are relatively low.
  • the thickness of the pot bottom increases starting from the pot wall and going in the direction of the central horizontal bearing in order to introduce the horizontal forces from the horizontal bearing into the pot bottom without necessitating an increase in the outer dimensions of the articulated bearing.
  • the articulated bearing can be filled with the pressurized fluid as the pressurized material by means of a closable port in the pot wall or in the cover.
  • the bearing journal is rotationally symmetrical and the bearing recess is a central bearing borehole. If, on the other hand, a tilting motion is required only around a single horizontal bearing axis, then the bearing journal according to the invention is a strip extending in essence over the width of the bearing pot, and the bearing recess is a bearing groove, with which this strip engages.
  • the bearing journal with a crowned outer surface, which forms preferably a spherical surface and which is braced horizontally against a cylindrical bore wall of the bearing borehole. Since virtually no vertical displacement can occur owing to the incompressibility of the deformable pressurized material, the bearing journal is stressed only by the hertzian compressive strains in the region of contact with the cylindrical bore wall of the bearing borehole.
  • the pot seal lies in a groove and is self-sealing as a consequence of the lip resting against the pot wall.
  • FIG. 1 is a vertical sectional view of articulated bearing with a bearing journal attached to the pot bottom.
  • FIG. 2 is a vertical sectional of articulated bearing with a bearing journal attached to the cover.
  • FIG. 3 is a vertical sectional view of raisable articulated bearing in its bottom position
  • FIG. 4 is a vertical sectional view of the articulated bearing, according to FIG. 3, in its raised position.
  • FIG. 5 is a fragmentary perspective view of an alternate form of bearing journal.
  • FIG. 1 is a vertical view of a universally articulated bearing 1, which serves, for example, to brace a bridge superstructure 2 (i.e., a supported member) on a bearing pad 3 (i.e, a supporting member).
  • the articulated bearing exhibits a bearing pot 4, which rests on an equalizing layer 5 on the bearing pad 3.
  • the bearing pot 4 exhibits a pot bottoms or end wall 6, from whose periphery projects upwardly a cylindrical pot side wall 7.
  • the bearing pot 4 is closed by means of a cover 8, which is mounted to the bridge superstructure 2.
  • the cover 8 projects into an upper opening of the pot 4.
  • a pot seal 10 Between the circumference of the cover 8 and the pot wall 7 is a pot seal 10 (see also FIG. 2).
  • the pot seal 10 allows the vertical shifts occurring between the cover 8 and the pot wall 7 with respect to the bearing pad 3 then the bridge superstructure 2 tilts.
  • the pot seal 10 exhibits a sealing ring 10a embedded in a circumferential groove 11 of the cover 8.
  • the sealing ring 10a includes a groove 10d which is open toward the material 9 to divide the ring 10a into a lip portion 10b and a mounting portion 10c.
  • the sealing lip 10b is snugly bearing against the pot wall 7,
  • the surface of the groove 10d that is stressed by the internal pot pressure is so large compared to the surface exposed to the outer pressure that the sealing ring 10a forms a self-sealing pot seal; that is, the contact pressure of the sealing lip 10b at the inner surface of the pot wall 7 and thus the sealing effect increases as the internal pressure of the pressurized material 9 also rises.
  • the horizontal bearing 12 exhibits an upwardly projecting bearing journal 13, which is centered on the pot bottom 6 and engages with a recess in the form of a central bearing borehole 14 formed in the cover 8.
  • the bearing journal 13 is provided on its circumference with a crowned outer surface 15, which in the illustrated embodiment is a spherical outer surface and is braced horizontally against a cylindrical bore wall 18 of the bearing borehole 14.
  • the top side 17 of the pot bottom 6 forms a flat truncated cone.
  • the thickness of the pot bottom 6 increases starting from the pot wall 7 in the direction of the central horizontal bearing 12.
  • the pot bottom 6 exhibits its greatest thickness in the middle, where the horizontal forces of the bearing journal 13 are introduced.
  • no horizontal forces e.g., form the cover 8) act on the pot wall 7.
  • the pot wall 7 exhibits a closable port 20, through which the pressurized material 9 can be fed into the bearing pot 4.
  • the embodiment shown in FIG. 2 differs from the embodiment 8 in FIG. 1 primarily due to the fact that the bearing journal 113 of the horizontal bearing 112 is attached to the cover 108 and engages within a bearing recess 114 in the middle of the pot bottom 106.
  • the channel 119 which connects the gap 118 between the bearing journal 113 and the bearing recess 114 with the surrounding interior space 114a, is designed as a sloped borehole. Several such boreholes can be provided.
  • a port 120' is provided in the cover 108.
  • the pressurized material can be injected through the port 120' while assembling the articulated bearing.
  • all of the essentially identical components in the embodiments according to FIGS. 1 and 2, respectively are marked with the same reference numerals increased by one hundred.
  • the embodiment according to FIGS. 3 and 4 differs from the embodiment according to FIG. 2 primarly in that the pot wall 207, the bearing journal 213 and the side wall of the bearing recess 214 exhibit such a large height, that the cover 208 can be raised by feeding the pressurized material 209 through the side port 220 vertically to raise the cover 208 by a stroke height h from the position, shown in FIG. 3, into a position shown in FIG. 4, whereby the crowned outer surface of the bearing journal 213 remains engaged over the entire stroke with the side wall of the bearing recess 214. Similarly the seal 210 remains in sealing engagement with the pot wall 207 during the entire stroke.
  • the articulated bearing 1 is suitable for a vertical adjustment, as is sometimes necessary in bridge construction, for example, when laying the foundation.
  • the cover 208 is raised by deliverying the pressurized material.
  • an initially adjusted bearing height can also be decreased by releasing the pressurized material through the port 220.
  • the pressurized material in the bearing pot 204 is no longer fluid, it can be liquefied again by briefly heating the bearing. To this end, a suitable pressurized material that can become liquid upon heating is selected.
  • Identical elements of the embodiment according to FIGS. 2 and 3, respectively, are marked, with the same reference numerals increased by one hundred.
  • the bearing journal 13 is rotationally symmetrical. The result is an especially advantageous loading on the pot bottom 6. If, on the other hand, a tilting option is required only around a single horizontal tilting axis, the bearing journal 13 is designed as a horizontal strip 330 that extends over the width of the bearing pot 304 and engages with the bearing groove forming the bearing recess as a shown in FIG. 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Sliding-Contact Bearings (AREA)
  • Earth Drilling (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
  • Surgical Instruments (AREA)
  • Harvester Elements (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
US08/162,082 1991-06-13 1992-06-11 Articulated bearing for heavy loads Expired - Fee Related US5466068A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4119458A DE4119458A1 (de) 1991-06-13 1991-06-13 Kipplager fuer schwere lasten
DE4119458.6 1991-06-13
PCT/EP1992/001311 WO1992022708A1 (de) 1991-06-13 1992-06-11 Kipplager für schwere lasten

Publications (1)

Publication Number Publication Date
US5466068A true US5466068A (en) 1995-11-14

Family

ID=6433826

Family Applications (1)

Application Number Title Priority Date Filing Date
US08/162,082 Expired - Fee Related US5466068A (en) 1991-06-13 1992-06-11 Articulated bearing for heavy loads

Country Status (8)

Country Link
US (1) US5466068A (ja)
EP (1) EP0589967B1 (ja)
JP (1) JPH06508187A (ja)
KR (1) KR940701484A (ja)
AT (1) ATE134010T1 (ja)
DE (2) DE4119458A1 (ja)
DK (1) DK0589967T3 (ja)
WO (1) WO1992022708A1 (ja)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5597240A (en) * 1996-03-04 1997-01-28 Hexcel-Fyfe Co., L.L.C. Structural bearing
US6108986A (en) * 1998-04-23 2000-08-29 Kawasaki Steel Corporation Earthquake-resistant load-bearing system
US6132091A (en) * 1998-11-17 2000-10-17 Nikon Corporation X-Y stage with arcuate surface bearings
US20020166296A1 (en) * 2001-05-04 2002-11-14 Kim Jae Kwan Directional rolling pendulum seismic isolation systems and roller assembly therefor
US6502524B1 (en) 2000-10-10 2003-01-07 Prosafe Production Pte Ltd. Turret support system and bearing unit
US20050210607A1 (en) * 2004-03-29 2005-09-29 Steward Machine Co., Inc. Static stabilizers for bridges
US20060193542A1 (en) * 2005-02-28 2006-08-31 Bradford Paul F Structural bearing using fully housed partially confined elastomer
CN102410376A (zh) * 2011-07-29 2012-04-11 株洲时代新材料科技股份有限公司 一种注射调高型桥梁钢支座液压密封方法及密封圈
CN102817328A (zh) * 2012-09-04 2012-12-12 北京市市政专业设计院股份公司 一种用于支座的调高方法
US20160017553A1 (en) * 2013-03-28 2016-01-21 Mageba S.A. Pot bearing
US11136779B2 (en) * 2017-01-10 2021-10-05 Heung Yeol KIM Seismic isolation device

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT409014B (de) * 1995-11-23 2002-05-27 Ernst Mag Baumann In bauwerk integrierte zweiteilige hohlstütze
KR200340118Y1 (ko) * 2003-10-17 2004-01-31 동일고무벨트주식회사 교좌장치
CN107130514A (zh) * 2017-06-20 2017-09-05 浙江秦山橡胶工程股份有限公司 一种抗拉拔的滚动型盆式橡胶支座
CN112942083A (zh) * 2021-01-28 2021-06-11 吴敏 一种抗震桥梁支座
CN112942082A (zh) * 2021-01-28 2021-06-11 吴敏 一种桥梁降沉防护支座

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2152981A1 (de) * 1971-10-23 1973-05-03 Kober Ag Kipplager fuer bruecken oder aehnliche tragwerke
US3806975A (en) * 1970-04-13 1974-04-30 Elastometal Ltd Structural bearings
US3934295A (en) * 1973-02-06 1976-01-27 Firma Kober Ag Rocker bearing for bridges on similar structures
US4006505A (en) * 1974-07-09 1977-02-08 Kober Ag Sliding swing support for bridges or similar supporting structures
US4610431A (en) * 1984-03-21 1986-09-09 Shw Schwabische Huttenwerke Gmbh Adjustable load support
US5071261A (en) * 1989-12-18 1991-12-10 New-York Hamberger Gummi-Waaren Compagnie Ag Earthquake-bearing

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921240A (en) * 1971-04-27 1975-11-25 Elastometal Ltd Structural bearings

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806975A (en) * 1970-04-13 1974-04-30 Elastometal Ltd Structural bearings
DE2152981A1 (de) * 1971-10-23 1973-05-03 Kober Ag Kipplager fuer bruecken oder aehnliche tragwerke
US3934295A (en) * 1973-02-06 1976-01-27 Firma Kober Ag Rocker bearing for bridges on similar structures
US4006505A (en) * 1974-07-09 1977-02-08 Kober Ag Sliding swing support for bridges or similar supporting structures
US4610431A (en) * 1984-03-21 1986-09-09 Shw Schwabische Huttenwerke Gmbh Adjustable load support
US5071261A (en) * 1989-12-18 1991-12-10 New-York Hamberger Gummi-Waaren Compagnie Ag Earthquake-bearing

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5597240A (en) * 1996-03-04 1997-01-28 Hexcel-Fyfe Co., L.L.C. Structural bearing
US6108986A (en) * 1998-04-23 2000-08-29 Kawasaki Steel Corporation Earthquake-resistant load-bearing system
US6132091A (en) * 1998-11-17 2000-10-17 Nikon Corporation X-Y stage with arcuate surface bearings
US6302585B1 (en) 1998-11-17 2001-10-16 Nikon Corporation Two Axis stage with arcuate surface bearings
US6502524B1 (en) 2000-10-10 2003-01-07 Prosafe Production Pte Ltd. Turret support system and bearing unit
US20020166296A1 (en) * 2001-05-04 2002-11-14 Kim Jae Kwan Directional rolling pendulum seismic isolation systems and roller assembly therefor
US6725612B2 (en) * 2001-05-04 2004-04-27 Jae Kwan Kim Directional rolling pendulum seismic isolation systems and roller assembly therefor
US7020924B2 (en) * 2004-03-29 2006-04-04 Steward Machine Co., Inc. Static stabilizers for bridges
US20050210607A1 (en) * 2004-03-29 2005-09-29 Steward Machine Co., Inc. Static stabilizers for bridges
US20060193542A1 (en) * 2005-02-28 2006-08-31 Bradford Paul F Structural bearing using fully housed partially confined elastomer
CN102410376A (zh) * 2011-07-29 2012-04-11 株洲时代新材料科技股份有限公司 一种注射调高型桥梁钢支座液压密封方法及密封圈
CN102410376B (zh) * 2011-07-29 2013-12-18 株洲时代新材料科技股份有限公司 一种注射调高型桥梁钢支座液压密封方法及密封圈
CN102817328A (zh) * 2012-09-04 2012-12-12 北京市市政专业设计院股份公司 一种用于支座的调高方法
US20160017553A1 (en) * 2013-03-28 2016-01-21 Mageba S.A. Pot bearing
US9540780B2 (en) * 2013-03-28 2017-01-10 Mageba S.A. Pot bearing
US11136779B2 (en) * 2017-01-10 2021-10-05 Heung Yeol KIM Seismic isolation device

Also Published As

Publication number Publication date
DE59205314D1 (de) 1996-03-21
ATE134010T1 (de) 1996-02-15
KR940701484A (ko) 1994-05-28
WO1992022708A1 (de) 1992-12-23
EP0589967A1 (de) 1994-04-06
DE4119458A1 (de) 1992-12-17
JPH06508187A (ja) 1994-09-14
EP0589967B1 (de) 1996-02-07
DK0589967T3 (da) 1996-06-17

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Effective date: 20031114

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Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362